#include <stdio.h>
int main(void){
    int a,b,i;
    printf("enter two numbers:");
    scanf("%d %d",&a,&b);
    printf("add:%d\n",add(a,b));
    printf("sub:%d\n",sub(a,b));
    printf("mul:%d\n",mul(a,b));
    printf("div:%d\n",div(a,b));
    for(i=0;i<5227;i++){

    }
    return 0;
}
